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Regression: VSE: Crash unlinking packed font file from text strip with more than one user #116215

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opened 2023-12-15 05:57:06 +01:00 by Mingwei Lim · 5 comments
Mingwei Lim commented 2023-12-15 05:57:06 +01:00
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System Information
Operating system: macOS-12.7.2-arm64-arm-64bit 64 Bits
Graphics card: Metal API Apple M1 Max 1.2

Blender Version
Broken: version: 3.6.0 Alpha, branch: main, commit date: 2023-05-04 09:04, hash: e674e32aa122
Worked: version: 3.6.0 Alpha, branch: main, commit date: 2023-05-01 20:15, hash: 0652945dbda7

Caused by d770fd5ac4

Short description of error
In the VSE, when unlinking a font file(while packed) from a text strip with more than one user, blender crashes instantly.

Exact steps for others to reproduce the error

  1. With Blender in factory settings, navigate to the VSE from the file menu (i.e. File > New > Video Editing).
  2. Create a text strip and select a font file (OpenSans-SemiBold.ttf is used as an example).
    image
  3. Pack the font file from the File menu (i.e. File > External Data > Pack Resources) and duplicate the text strip so that there's now two users of the font data.
    image
  4. Select the first strip and unlink the font file.
    image
  5. Blender crashes.
**System Information** Operating system: macOS-12.7.2-arm64-arm-64bit 64 Bits Graphics card: Metal API Apple M1 Max 1.2 **Blender Version** Broken: version: 3.6.0 Alpha, branch: main, commit date: 2023-05-04 09:04, hash: `e674e32aa122` Worked: version: 3.6.0 Alpha, branch: main, commit date: 2023-05-01 20:15, hash: `0652945dbda7` Caused by d770fd5ac486 **Short description of error** In the VSE, when unlinking a font file(while packed) from a text strip with more than one user, blender crashes instantly. **Exact steps for others to reproduce the error** 1. With Blender in factory settings, navigate to the VSE from the file menu (i.e. File > New > Video Editing). 2. Create a text strip and select a font file (OpenSans-SemiBold.ttf is used as an example). ![image](/attachments/5bf9d47c-25bc-4ee6-8f30-b883e8361e6f) 3. Pack the font file from the File menu (i.e. File > External Data > Pack Resources) and duplicate the text strip so that there's now two users of the font data. ![image](/attachments/68dbbc0e-49d4-49a7-9dc6-7ebce56d330e) 4. Select the first strip and unlink the font file. ![image](/attachments/3bad8a56-d04a-4834-b825-955c73375c70) 5. Blender crashes.
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Mingwei Lim added the
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Mingwei Lim changed title from VSE: Crash when packed font file with more than one user is unlinked from a text strip to VSE: Crash unlinking packed font file from text strip with more than one user 2023-12-15 06:00:24 +01:00
Iliya Katushenock changed title from VSE: Crash unlinking packed font file from text strip with more than one user to Regression: VSE: Crash unlinking packed font file from text strip with more than one user 2023-12-15 09:32:25 +01:00
Iliya Katushenock added this to the 3.6 LTS milestone 2023-12-15 09:32:40 +01:00
Iliya Katushenock commented 2023-12-15 09:33:10 +01:00
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crash for null deref in vse font.txt
2.1 KiB
Iliya Katushenock added
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 labels 2023-12-15 09:35:00 +01:00
Philipp Oeser commented 2023-12-15 09:49:38 +01:00
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Caused by d770fd5ac4

@ideasman42 : mind checking?

Caused by d770fd5ac486 @ideasman42 : mind checking?
Philipp Oeser added
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Campbell Barton self-assigned this 2023-12-15 09:54:22 +01:00
Philipp Oeser commented 2023-12-15 10:04:00 +01:00
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Als see this: Can't find font: <builtin>

Quick bandaid:

diff --git a/source/blender/blenfont/intern/blf.cc b/source/blender/blenfont/intern/blf.cc
index 61c8a84234f..87d1234fb0b 100644
--- a/source/blender/blenfont/intern/blf.cc
+++ b/source/blender/blenfont/intern/blf.cc
@@ -130,7 +130,7 @@ static int blf_search_by_filepath(const char *filepath)
 {
   for (int i = 0; i < BLF_MAX_FONT; i++) {
     const FontBLF *font = global_font[i];
-    if (font && (BLI_path_cmp(font->filepath, filepath) == 0)) {
+    if (font && font->filepath && (BLI_path_cmp(font->filepath, filepath) == 0)) {
       return i;
     }
   }
Als see this: `Can't find font: <builtin>` Quick bandaid: ```diff diff --git a/source/blender/blenfont/intern/blf.cc b/source/blender/blenfont/intern/blf.cc index 61c8a84234f..87d1234fb0b 100644 --- a/source/blender/blenfont/intern/blf.cc +++ b/source/blender/blenfont/intern/blf.cc @@ -130,7 +130,7 @@ static int blf_search_by_filepath(const char *filepath) { for (int i = 0; i < BLF_MAX_FONT; i++) { const FontBLF *font = global_font[i]; - if (font && (BLI_path_cmp(font->filepath, filepath) == 0)) { + if (font && font->filepath && (BLI_path_cmp(font->filepath, filepath) == 0)) { return i; } } ```
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 labels 2023-12-15 10:15:32 +01:00
Iliya Katushenock commented 2023-12-15 10:31:20 +01:00
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What about 3.6?

What about 3.6?
Philipp Oeser commented 2023-12-15 10:35:28 +01:00
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What about 3.6?

Have added the fix to #109399

> What about 3.6? Have added the fix to #109399
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Reference: blender/blender#116215
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